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Selection of DSO for imaging, Pinwheel galaxy

Astrophotography Beginner DSO
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#1 bosastroguy

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Posted 21 March 2023 - 08:42 AM

I am looking for some resources for picking targets for my rig.  Last nite, I imaged the Pinwheel galaxy from a Bortle 4 area in Vermont.  Canon 6D MII, Red Cat 51, SWSA Gti.  Iso 2000, 2 sec exposures x 30 with calibration frames, stacked in DSS, post in PS.  Pretty happy with the nice round stars but still trying to get the hang of post processing.   Any comments on the data?  Any resources, You Tube videos, etc to learn how to size DSO's using Stellarium, etc to pick targets for my setup?  Thanks

 

https://drive.google...MKKxE/view?usp=

sharing

 



#2 Dynan

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Posted 21 March 2023 - 08:51 AM

https://telescopius....deep-sky/search



#3 jonnybravo0311

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Posted 21 March 2023 - 10:13 AM

Some comments...

 

That's an awfully small target for such a wide field setup. Take a look at Markarian's Chain... a whole slew of galaxies to frame up :)

 

Your focus is off. The stars, while round, are all soft (i.e. not pinpoint). If I'm not mistaken, the Cat comes with a built-in Bahtinov mask in the lens cap. Use that to really dial in focus.

 

ISO 2000 sounds a bit high, but I'm not an expert on Canon sensors, so maybe that works for you.

 

2 second subs? That GTi should be able to track much better than only getting you 2 second subs. If not, definitely work on your polar alignment and make sure the camera/scope are well balanced on the saddle.


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#4 unimatrix0

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Posted 21 March 2023 - 10:45 AM

Am I reading it right?  You captured 2seconds x30 ?  That's only 1 minute integration and the pinwheel galaxy is very dimm target for such a short time. 

 

You are also imaging it with a full frame on a Redcat, which is a short focal length scope only 250mm

 

Here is what your FOV looks like

 

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